功能性烯酸树脂通过光诱导端粒化制备,使用四甲作为端粒原体
Mateusz Weisbrodt1, Agnieszka Kowalczyk1, Beata Schmidt1
1Department of Chemical Organic Technology and Polymeric Materials, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, 70-322 Szczecin, Poland.
Materials (Basel, Switzerland)
|December 23, 2023
概括
这项研究提出了一种新的紫外线启动的端粒化方法,用于创建功能性烯酸树脂 (FARs) 带有炭基和基基. 较高的四甲含量可以促进单体转化,降低粘度,但不会影响关键性质.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 有机合成 有机合成
背景情况:
- 功能性烯酸树脂 (FARs) 是多功能材料,在涂料,粘合剂和先进复合材料中具有应用.
- 开发有效的链内功能化方法和可控制的分子量对于定制FAR特性至关重要.
- 结合特定的功能组,如和,以及终端原子,增强了树脂的反应性和性能.
研究的目的:
- 开发和验证一种新的,无溶液的紫外线启动端粒化方法,用于合成功能性烯酸树脂 (FAR).
- 研究四甲 (CBr4) 电原含量对合成的FARs的动力学,分子量和热性质的影响.
- 确认成功地将炭基,基和终端原子纳入烯酸端子结构.
主要方法:
- 无溶液紫外线启动的端粒化使用n-丁烯酸,烯酸和4-烯酸二二.
- 使用四甲 (CBr4) 作为不同度的电原体.
- 采用光差扫描热量计 (photo-DSC) 进行动力学研究,凝透色谱 (GPC) 进行分子量分析,以及差分扫描热量计 (DSC) 测量热性质 (Tg).
- 核磁共振 (NMR) 光谱法用于结构确认.
主要成果:
- 泰隆基因含量超过5重量级. 零件并没有显著改变紫外线端粒化速率,分子量或玻璃过渡温度 (Tg).
- 增加的四甲含量显著增强了单体转化,达到88%.
- 较高的端原度有效地将功能性烯酸树脂的粘度降低到大约6Pa·s.
- 核磁共振研究证实了CBr4成功地融入到功能性烯酸端粒结构中.
结论:
- 开发的紫外线启动的端粒化提供了一条有效的途径,以功能性烯酸树脂具有理想的链内和终端功能.
- 可以优化四甲含量,以控制单体转化和树脂粘度,而不会损害基本材料特性.
- 这种方法为制造适合先进材料应用的功能性烯酸树脂提供了一条途径.
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